Page 1 - Rev.8 Engineering Bulletin Doc 104 BRECOflex CO., L.L.C. H i g h P r e c i s i o n D r i v e C o m p o n e n t s BRECOflex Clamps – Solutions for Timing Belt Linear Drives All timing belt linear drives require a clamp to transfer the belt motion to linear shuttle travel. BRECOflex clamps and tensioning clamps for metric and English pitch belts ensure a solid attachment for utilization of full belt strength. Custom clamps are available in various materials and coatings. One or more of the following three clamp types are recommended depending on drive layout. 1) Standard Clamp 2) Half Clamp 3) Tensioning Clamp Application Examples for 3 clamp types: 1) Standard Clamp – used for connecting both belt ends together at the carriage 2) Half Clamp – used for connecting each belt end to the carriage or machine frame 3) Tensioning Clamp – used like a half clamp, but also to adjust tension in the system
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Page 1 - Rev.8
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BRECOflex CO., L.L.C. H i g h P r e c i s i o n D r i v e C o m p o n e n t s
BRECOflex Clamps –
Solutions for Timing Belt Linear Drives
All timing belt linear drives require a clamp to transfer the belt motion to linear shuttle travel. BRECOflex
clamps and tensioning clamps for metric and English pitch belts ensure a solid attachment for utilization of
full belt strength. Custom clamps are available in various materials and coatings. One or more of the
following three clamp types are recommended depending on drive layout.
1) Standard Clamp 2) Half Clamp 3) Tensioning Clamp
Application Examples for 3 clamp types:
1) Standard Clamp – used for connecting
both belt ends together at the carriage
2) Half Clamp – used for connecting each
belt end to the carriage or machine frame
3) Tensioning Clamp – used like a half clamp,
but also to adjust tension in the system
Page 2 - Rev.8
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Standard Clamps (metric pitches) – Used for connecting both belt ends
Clamp part description:
B x L (belt pitch) Type (O or B)
Type O = clamp with no holes
Type B = clamp with holes (shown)
Note:
-Standard material is AL 6061
-5 teeth minimum engagement
recommended at each belt end
(*) 6 mounting holes for T2.5 clamps
Standard Clamp Dimensions – T Series Metric
Belt Pitch Belt Width
b(mm) Part Description
B
(mm)
L
(mm)
d
(mm)
m
(mm)
a
(mm)
c
(mm)
H
(mm)
T2.5 10 30 x 50 T2.5 Clamp Type (O or B*) 30 50
5.5 20
30 15 6 20 40 x 60 T2.5 Clamp Type (O or B*) 40 60 30
T5
25 50 x 120 T5 Clamp Type (O or B) 50
120 5.5
38
80 20 10
32 60 x 120 T5 Clamp Type (O or B) 60 46
50 75 x 120 T5 Clamp Type (O or B) 75 62
75 110 x 120 T5 Clamp Type (O or B) 110 94
100 140 x 120 T5 Clamp Type (O or B) 140 124
T10
25 50 x 160 T10 Clamp Type (O or B) 50
160 6.5
38
110 30 10
32 60 x 160 T10 Clamp Type (O or B) 60 46
50 75 x 160 T10 Clamp Type (O or B) 75 62
75 110 x 160 T10 Clamp Type (O or B) 110 94
100 140 x 160 T10 Clamp Type (O or B) 140 124
150 190 x 160 T10 Clamp Type (O or B) 190 174
T20
25 50 x 200 T20 Clamp Type (O or B) 50
200 6.5
38
160 60 20
32 60 x 200 T20 Clamp Type (O or B) 60 46
50 75 x 200 T20 Clamp Type (O or B) 75 62
75 110 x 200 T20 Clamp Type (O or B) 110 94
100 140 x 200 T20 Clamp Type (O or B) 140 124
150 190 x 200 T20 Clamp Type (O or B) 190 166
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Standard Clamps (metric pitches) – Used for connecting both belt ends
Clamp part description:
B x L (belt pitch) Type (O or B)
Type O = clamp with no holes
Type B = clamp with holes (shown)
Notes:
-Standard material is AL 6061
-5 teeth minimum engagement
recommended at each belt end
Standard Clamp Dimensions – AT Series Metric
Belt Pitch Belt Width
b(mm) Part Description B(mm)
L
(mm)
d
(mm)
m
(mm)
a
(mm)
c
(mm)
H
(mm)
AT3
10 30 x 75 AT3 Clamp Type (O or B) 30
75 5.5
20
50 12.5 8 20 50 x 75 AT3 Clamp Type (O or B) 50 30
25 60 x 75 AT3 Clamp Type (O or B) 60 38
AT5
25 50 x 120 AT5 Clamp Type (O or B) 50
120 5.5
38
80 20 10
32 60 x 120 AT5 Clamp Type (O or B) 60 46
50 75 x 120 AT5 Clamp Type (O or B) 75 62
75 110 x 120 AT5 Clamp Type (O or B) 110 94
100 140 x 120 AT5 Clamp Type (O or B) 140 124
AT10
BAT10
BATK10
25 50 x 160 [Pitch] Clamp Type (O or B) 50
160 6.5
38
110 30 10
32 60 x 160 [Pitch] Clamp Type (O or B) 60 46
50 75 x 160 [Pitch] Clamp Type (O or B) 75 62
75 110 x 160 [Pitch] Clamp Type (O or B) 110 94
100 140 x 160 [Pitch] Clamp Type (O or B) 140 124
150 190 x 160 [Pitch] Clamp Type (O or B) 190 174
ATS15
BAT15
BATK15
25 50 x 180 [Pitch] Clamp Type (O or B) 50
180 9
38
140 50 20 32 60 x 180 [Pitch] Clamp Type (O or B) 60 46
50 75 x 180 [Pitch] Clamp Type (O or B) 75 62
75 110 x 180 [Pitch] Clamp Type (O or B) 110 94
AT20
25 50 x 200 AT20 Clamp Type (O or B) 50
200 9
38
160 60 20
32 60 x 200 AT20 Clamp Type (O or B) 60 46
50 75 x 200 AT20 Clamp Type (O or B) 75 62
75 110 x 200 AT20 Clamp Type (O or B) 110 94
100 140 x 200 AT20 Clamp Type (O or B) 140 124
150 190 x 200 AT20 Clamp Type (O or B) 190 166
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Standard Clamps (imperial pitches) – Used for connecting both belt ends
Clamp part description:
B x L (belt pitch) Type (O or B)
Type O = clamp with no holes
Type B = clamp with holes (shown)
Notes:
-Standard material is AL 6061
-5 teeth minimum engagement
recommended at each belt end
(*) Belt widths only available in truly endless construction.
Standard Clamp Dimensions – Imperial Series
Belt Pitch Belt Width
b(mm) Part Description
B
(mm)
L
(mm)
d
(mm)
m
(mm)
a
(mm)
c
(mm)
H
(mm)
T1/5”
(XL)
25.4 50 x 120 T1/5” Clamp Type (O or B) 50
120 5.5
38
80 20 10 38.1* 60 x 120 T1/5” Clamp Type (O or B) 60 46
50.8* 75 x 120 T1/5” Clamp Type (O or B) 75 62
76.2* 110 x 120 T1/5” Clamp Type (O or B) 110 94
T3/8”
(L)
25.4 50 x 160 T3/8” Clamp Type (O or B) 50
160 6.5
38
110 30 10 38.1 60 x 160 T3/8” Clamp Type (O or B) 60 46
50.8 75 x 160 T3/8” Clamp Type (O or B) 75 62
76.2 110 x 160 T3/8” Clamp Type (O or B) 110 94
T1/2”
(H)
25.4 50 x 160 T1/2” Clamp Type (O or B) 50
160 6.5
38
110 30 10
38.1 60 x 160 T1/2” Clamp Type (O or B) 60 46
50.8 75 x 160 T1/2” Clamp Type (O or B) 75 62
76.2 110 x 160 T1/2” Clamp Type (O or B) 110 94
101.6 140 x 160 T1/2” Clamp Type (O or B) 140 124
T7/8”
(XH)
25.4 50 x 200 T7/8” Clamp Type (O or B) 50
200 6.5
38
160 60 20
38.1 60 x 200 T7/8” Clamp Type (O or B) 60 46
50.8 75 x 200 T7/8” Clamp Type (O or B) 75 62
76.2 110 x 200 T7/8” Clamp Type (O or B) 110 94
101.6 140 x 200 T7/8” Clamp Type (O or B) 140 124
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Half Clamps (metric pitches) - Used for connecting one belt end
Clamp part description:
B x L (belt pitch) Type (O or B)
Type O = clamp with no holes
Type B = clamp with holes (shown)
Notes:
-Standard material is AL 6061
-5 teeth minimum engagement
recommended at each belt end
Short Clamp Dimensions – T and HTD Metric
Belt Pitch Belt Width
b(mm) Part Description
B
(mm)
L
(mm)
d
(mm)
m
(mm)
a
(mm)
a1
(mm)
H
(mm)
T5
25 50 x 58 T5 Clamp Type (O or B) 50
58 5.5
35
30 15 10 32 60 x 58 T5 Clamp Type (O or B) 60 42
50 75 x 58 T5 Clamp Type (O or B) 75 60
75 110 x 58 T5 Clamp Type (O or B) 110 90
T10
25 50 x 78 T10 Clamp Type (O or B) 50
78 6.5
35
40 20 10 32 60 x 78 T10 Clamp Type (O or B) 60 42
50 75 x 78 T10 Clamp Type (O or B) 75 60
75 110 x 78 T10 Clamp Type (O or B) 110 90
T20
25 50 x 98 T20 Clamp Type (O or B) 50
78 9
35
60 20 20 32 60 x 98 T20 Clamp Type (O or B) 60 42
50 75 x 98 T20 Clamp Type (O or B) 75 60
75 110 x 98 T20 Clamp Type (O or B) 110 90
HTD 5M
10 28 x 41.8 5M Clamp Type (O or B) 28
41.8 5.5
16
25 - 8 15 34 x 41.8 5M Clamp Type (O or B) 32 22
25 75 x 41.8 5M Clamp Type (O or B) 50 32
HTD 8M
20 45 x 66 8M Clamp Type (O or B) 45
66 9
29
40 - 15 30 55 x 66 8M Clamp Type (O or B) 60 39
50 75 x 66 8M Clamp Type (O or B) 75 59
85 110 x 66 8M Clamp Type (O or B) 110 94
HTD14M
40 71 x 116 14M Clamp Type (O or B) 71
116 11
51
70 - 22 55 86 x 116 14M Clamp Type (O or B) 86 66
85 116 x 116 14M Clamp Type (O or B) 116 96
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Half Clamps (metric pitches) - Used for connecting one belt end
Clamp part description:
B x L (belt pitch) Type (O or B)
Type O = clamp with no holes
Type B = clamp with holes (shown)
Notes:
-Standard material is AL 6061
-5 teeth minimum engagement
recommended at each belt end
Short Clamp Dimensions – AT Series Metric
Belt Pitch Belt Width
b(mm) Part Description
B
(mm)
L
(mm)
d
(mm)
m
(mm)
a
(mm)
a1
(mm)
H
(mm)
AT5
25 50 x 58 AT5 Clamp Type (O or B) 50
58 5.5
35
30 15 10 32 60 x 58 AT5 Clamp Type (O or B) 60 42
50 75 x 58 AT5 Clamp Type (O or B) 75 60
75 110 x 58 AT5 Clamp Type (O or B) 110 90
AT10
BAT10
BATK10
25 50 x 78 [Pitch] Clamp Type (O or B) 50
78 6.5
35
40 20 10 32 60 x 78 [Pitch] Clamp Type (O or B) 60 42
50 75 x 78 [Pitch] Clamp Type (O or B) 75 60
75 110 x 78 [Pitch] Clamp Type (O or B) 110 90
ATS15
BAT15
BATK15
25 50 x 88 [Pitch] Clamp Type (O or B) 50
88 9
35
50 20 20 32 60 x 88 [Pitch] Clamp Type (O or B) 60 42
50 75 x 88 [Pitch] Clamp Type (O or B) 75 60
75 110 x 88 [Pitch] Clamp Type (O or B) 110 90
AT20
25 50 x 98 AT20 Clamp Type (O or B) 50
98 9
35
60 20 20 32 60 x 98 AT20 Clamp Type (O or B) 60 42
50 75 x 98 AT20 Clamp Type (O or B) 75 60
75 110 x98 AT20 Clamp Type (O or B) 110 90
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Tensioning Clamps – Used to connect to one belt end and apply tension to the belt
Tensioning Clamp Options
Belt Pitch Belt Width (mm)
25 32 50 75 100 150
T5 Type A-[1,2 or 3] Type A-[1,2 or 3] Type A-[1,2 or 3] - - -
T10 Type A-[1,2 or 3] Type A-[1,2 or 3] Type A-[1,2 or 3] - - -
T20 - - Type B-1 Type B-2 Type B-2 Type C
AT5 Type A-[1,2 or 3] Type A-[1,2 or 3] Type A-[1,2 or 3] - - -
AT10 Type A-[1,2 or 3] Type A-[1,2 or 3] Type A-[1,2 or 3] Type B-2 Type B-2 Type C
AT20 - - Type B-1 Type B-2 Type B-2 Type C
ATL10 Type A-[1,2 or 3] Type A-[1,2 or 3] Type B-1 Type B-2 Type B-2 -
ATL20 - - Type B-1 Type B-2 Type B-2 -
BATK10 - Type A-[1,2 or 3] Type A-[1,2 or 3] Type B-2 Type B-2 -
BATK15 - - Type B-1 Type B-2 Type B-2 -
ATS15 - - Type B-1 Type B-2 Type B-2 Type C
Clamp Plate with Top Plate Standard Tensioning Clamp Standard Tensioning Clamp
Type A-1 without tensioning rod and
holes – Pg. 8 Type A-2 with tensioning rod and
slotted holes – Pg. 9 Type A-3 with tensioning rod and
threaded holes – Pg. 10
Interchangeable Tensioner Clamp Interchangeable Tensioner Clamp High Load Tensioning Clamp
Type B-1 with tensioning rod and
slotted holes – Pg. 11 Type B-2 with tensioning rod and
slotted holes – Pg. 12 Type C with tensioning rod and
slotted holes – Pg. 13
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Clamp Assembly Type A-1
Part description:
B x L (belt pitch) Type A-1
clamp assembly
Note:
Standard material is AL 6061
H = overall thickness including belt
See Appendix for installation notes
Clamp Assembly Type A-1
Belt Pitch Belt Width
b(mm) Part Description B(mm) L(mm) H(mm)
T5
25 50x80 T5 A-1 clamp assembly 50
80 18.5 32 60x80 T5 A-1 clamp assembly 60
50 75x80 T5 A-1 clamp assembly 75
T10
25 50x80 T10 A-1 clamp assembly 50
80 19.5 32 60x80 T10 A-1 clamp assembly 60
50 75x80 T10 A-1 clamp assembly 75
AT5
25 50x80 AT5 A-1 clamp assembly 50
80 19.0 32 60x80 AT5 A-1 clamp assembly 60
50 75x80 AT5 A-1 clamp assembly 75
AT10
25 50x80 AT10 A-1 clamp assembly 50
80 19.5 32 60x80 AT10 A-1 clamp assembly 60
50 75x80 AT10 A-1 clamp assembly 75
ATL5
25 50x80 ATL5 A-1 clamp assembly 50
80 19.0 32 60x80 ATL5 A-1 clamp assembly 60
50 75x80 ATL5 A-1 clamp assembly 75
ATL10 25 50x80 ATL10 A-1 clamp assembly 50
80 19.5 32 60x80 ATL10 A-1 clamp assembly 60
BATK10 32 60x80 BATK10 A-1 clamp assembly 60
80 19.5 50 75x80 BATK10 A-1 clamp assembly 75
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Tensioning Clamp Type A-2
Tensioner part description:
B x L (belt pitch) Type A-2
tension clamp
Notes:
-Standard material is AL 6061
with zinc-plated hardware
-H = overall thickness including
belt
-Specify running direction
for BAT and BATK pitches per
appendix
See Appendix for installation notes
Tensioning Clamp Type A-2
Belt Pitch Belt Width
b(mm) Part Description B(mm) L(mm) M(mm) m(mm) H(mm)